NAIST Graduate School of Materials Science

Photonic Molecular Science Laboratory

Staff & Contact
Educational StaffProf. Tsuyoshi Kawai
Associate Prof. Takuya Nakashima
Assistant Prof. Yoshiyuki Nonoguchi, Jatish Kumar
ContactFAX: +81-743-72-6179
URLhttp://mswebs.naist.jp/LABs/kawai/english/index.html

Research activity of this laboratory is focused on “Photonic Molecular Science”, a new research field covering molecules, polymers, coordination compounds and low-dimensional nanomaterials with advanced photo-functionality.  We accept students who have been educated in related fields such as chemistry, applied physics, material science and electronic engineering in Japanese and overseas universities. Students are trained in organic and inorganic syntheses and characterization methods, which are essential for developing future advanced materials and devices with photo-functionality.  We welcome ambitious students with high motivation, flexibility, and positive attitudes to address new scientific challenges while taking advantage of their educational backgrounds and scientific interests in materials science.

Molecular- and nanoparticle-based devices show promise as active elements in future information science and technology for communication, memory, sensing and display. Our research interests are focused on new photo-functional molecular and nanoscale materials which actively interact with photons. Our research subjects include photo-responsive molecules (Fig .1), π-conjugated molecules, nanoparticles and nanowires (Fig. 2), intelligent fluorescence sensors (Fig .3), nanocarbons, and circularly polarized light-emitting materials.

 

Fig.1 Schematic illustration for photoisomerization reactions of our unique photochromic molecule, which exhibits photoreaction with quantum yield of unity, a “photon-quantitative reaction”

  • Fig. 2 Flexible thermoelectric sheet based on p-type and n-type carbon nanotubes
  • Fig. 3 Efficient emission of circularly polarized luminescence from chiral molecules and their use for sensing bio-related compounds are studied

1. T. Nakashima, K. Tsuchie, R. Kanazawa, R. Li, S. Iijima, O. Galangau, T. Kawai et al., “Self-Contained Photoacid Generator Triggered by Photocyclization of Triangle Terarylene Backbone”, J. Am. Chem. Soc. 137 7023-7026 (2015).
2. J. Kumar, H. Tsumatori, J. Yuasa, T. Kawai, T. Nakashima, “Self-Discriminating Termination of Chiral Supramolecular Polymerization: Tuning the Length of Nanofiber”, Angew. Chem. Int. Ed. 54, 5943-5947 (2015).
3. Y. Taniguchi, T. Takishita, T. Kawai, T. Nakashima, “End-to-End Self-Assembly of Semiconductor Nanorods in Water by using an Amphiphilic Surface Design”, Angew. Chem. Int. Ed., 55, 2083-2086 (2016)
4. Y. Nonoguchi, M. Nakano, T. Murayama, H. Hagino, S. Hama, K. Miyazaki, R. Matsubara, M. Nakamura, T. Kawai, “Simple Salt-coordinated n-Type Nanocarbon Materials Stable in Air”, Adv. Funct. Mater., 26, 3021-3028 (2016)

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